PROCESS FOR EXTRACTING GALLIUM USING SUBSTITUTED HYDROXYQUINOLINES, AND ORGANIC COMPOUNDS HAVING A SULFATE OR SULFONATE GROUP

摘要

Gallium values are extracted and recovered from basic aqueous solutions thereof, notably from sodium aluminate solutions of Bayer process origin, by liquid/liquid extraction thereof with a water immiscible organic phase comprising an organic solvent having dissolved therein an organic-soluble substituted hydroxyquinoline and at least one organic-soluble organosulfate or organosulfonate comprising at least one acid function, either in the free acid or salt form thereof.